Low Dose CT Chest (LDCT) screening helps detect lung cancer at an early stage, reducing risk and improving treatment opportunities.

Currently, lung cancer screening can be done using low-dose computed tomography (LDCT), which is a three - dimensional imaging method that provides higher resolution than regular X-rays.

 

Clinical studies have found that annual LDCT screening for early-stage lung cancer can reduce lung cancer mortality by as much as 20 - 30%* in high-risk individuals. Early detection of lung cancer before symptoms appear allows for prompt treatment and effective outcomes, with patients receiving a lower radiation dose compared to standard computed tomography (CT) chest scans.

 

Getting to Know Low Dose CT Chest (LDCT)

Low Dose CT Chest is a low-radiation computed tomography scan of the chest area that produces 3D images with good detail of the lungs. Even with a low radiation dose and without the need for contrast injection, it can effectively detect small spots or nodules in the lungs.

 

Comparison of Radiation Dose from Different Types of Scans

        ๐  Standard CT chest 7 mSv

        ๐  Low dose CT chest 1.5 mSv

        ๐  Chest X-ray 0.1 mSv

 

Why Choose Low Dose CT

        ๐  Provides three - dimensional images with better detail than 2D chest X-rays

        ๐  Uses about 5 times less radiation than standard CT Chest (Standard CT chest uses 7 mSv* while LDCT Chest uses 1.5 mSv*)

        ๐  Easy to perform, takes a short time, and has minimal side effects

        ๐  Can detect small spots or nodules in the lungs without the need for contrast injection

 

Preparation and Procedure

        ๐  No need to fast or avoid drinking

        ๐  Change into a gown and lie on the examination bed inside the machine

        ๐  Hold your breath during the scan for about 15 - 20 seconds

        ๐  The scan takes approximately 5 - 10 minutes

 

Interpretation of Results

After the scan, a radiologist will review the images for abnormalities or the likelihood of malignancy. If there is a high chance of malignancy, further tests such as PET/CT, bronchoscopy, and biopsy may be recommended for rapid diagnosis. If the likelihood is low, continuous monitoring as advised by the physician is recommended.

 

Important Information About Low Dose CT Chest Results

        ๐  An “abnormal” result does not confirm cancer 100%. The physician will inform the patient and provide appropriate advice.

        ๐  Current results cannot guarantee that the detected abnormality will not develop into lung cancer or that new abnormalities will not appear in the future.

        ๐  Follow - up examinations may be necessary as recommended by the physician.

        ๐  Even if the current result is “normal,” high-risk individuals are advised to continue LDCT chest screening every 1-2 years.

 

 Source : Phyathai Phaholyothin Hospital